EP2262648B1 - Procédé de fabrication d'un élément en feuille - Google Patents

Procédé de fabrication d'un élément en feuille Download PDF

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Publication number
EP2262648B1
EP2262648B1 EP09716332A EP09716332A EP2262648B1 EP 2262648 B1 EP2262648 B1 EP 2262648B1 EP 09716332 A EP09716332 A EP 09716332A EP 09716332 A EP09716332 A EP 09716332A EP 2262648 B1 EP2262648 B1 EP 2262648B1
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EP
European Patent Office
Prior art keywords
layer
metallic
photoactivatable
metallic layer
masking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09716332A
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German (de)
English (en)
Other versions
EP2262648A2 (fr
Inventor
Ludwig Brehm
Haymo Katschorek
Norbert Laus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leonhard Kurz Stiftung and Co KG
Original Assignee
Leonhard Kurz Stiftung and Co KG
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Publication of EP2262648A2 publication Critical patent/EP2262648A2/fr
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Publication of EP2262648B1 publication Critical patent/EP2262648B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/337—Guilloche patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/346—Perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/415—Marking using chemicals
    • B42D25/42—Marking using chemicals by photographic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0092—Metallizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B42D2033/10—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

  • the invention relates to a method for producing a film element with mutually registered metallic layers and such a film element.
  • Film elements with metallic reflection layers are frequently used to make it difficult and possibly prevent the copying and misuse of documents such as banknotes, credit cards or debit cards or products as an optically variable security element (OVD).
  • ODD optically variable security element
  • metallic reflection layer is not provided over the entire surface in the film element but is structured and is provided only partially in the film element.
  • metallic layers registered to one another are understood as meaning layers which are arranged in register with one another, ie. which are structured in a fixed relationship to each other.
  • WO 03/095227 A1 an optically variable security element whose metallic reflection layer is only partially provided and thus a transparent window is formed in the security element.
  • WO2004 / 020218 also shows an optically variable security element with metallic layers.
  • a first metallic layer is patterned by means of a photoresist and, after a few intermediate steps (Application of further layers), structured in a further manufacturing step, a second metallic layer by means of a photoresist, a registration of the second exposure process on the structured first metallic layer is difficult and associated with larger register inaccuracies. Furthermore, it has been found that the foil body is distorted only slightly, but unpredictably, by the processing steps lying between the exposure processes, so that perfect, register-accurate structuring of the second metallic layer to the first metallic layer also fails for this reason.
  • the invention is based on the object to improve the production of film elements with each other registered metallic layers and to provide a correspondingly improved film element.
  • This object is achieved by a method for producing a film element with metallic layers registered to one another, in which a first metallic layer provided on a first surface of a flexible, single-layer or multilayer carrier film and one on the first surface Masking layer provided opposite the second surface of the carrier film by means of mutually synchronized, structuring processes, preferably optical structure-generating processes, to each other in register, in which after structuring of the first metallic layer and the masking layer one or more further layers are applied to the first metallic layer at a second metallic layer is applied to the one or more further layers and a first photoactivatable layer is applied to the second metallic layer, and wherein the first photoactivatable layer by means of exposure through the masking layer, the first metallic layer, the one or more further Layers and the second metallic layer from the side of the masking layer is patterned by means of electromagnetic radiation of a wavelength for which the first photoactivatable layer is sensitive t, wherein the thickness and the material of the masking layer and the first metallic layer are selected such that the ratio of the transmittances of the
  • the first and second metallic layers are registered to one another and thus arranged register-accurate with each other.
  • the first photoactivatable layer which serves to structure the second metallic layer, is not, as usual, exposed from the side of the photoactivatable layer which faces away from the metallic layer, but exposed through this metallic layer.
  • the film body which comprises the masking layer, the carrier film, the first metallic layer, the one or more further layers and the second metallic layer is thus exposed from the side of the masking layer, ie the exposure device is arranged on the side of this film body whose uppermost one Layer is the masking layer.
  • the masking layer is therefore the one with respect to the exposure device
  • Exposure device closest layer of the film body so that the exposure is effected by the masking layer. It has surprisingly been found that it is possible to structure the first photoactivatable layer by means provided on the second surface of the carrier film masking layer, although between this masking layer and the photoactivatable layer, the full-surface provided second metallic layer (the appears opaque to the human observer) and the (otherwise) structured first metallic layer lies.
  • the invention enables register-accurate structuring of the first and second metallic layers and avoids the problems described above.
  • the ratio of the transmittance of the masking layer to the transmittance of the first metallic layer at the wavelength of the electromagnetic radiation used for the exposure is chosen to be greater than or equal to 1:15, preferably between 1:15 and 1:20.
  • transmittance is understood as meaning the degree of permeability of the layer for the electromagnetic radiation (in percent), ie that the first metallic layer is at least 15 times as permeable to the electromagnetic radiation as the masking layer.
  • the transmittance of the layer structure consisting of the (structured) masking layer, carrier film and the (structured) first metallic layer is at the most opaque (opaque) point (masking layer, carrier foil, first metallic layer) and at the most transmissive (light-transmitting) point
  • Second layer and first metallic layer not present determined by the transmittance of the carrier film. In addition, it must be ensured that even at the locations where the masking layer is not provided, but the first metallic layer is provided, the first photoactivatable layer is activated during the exposure and at the locations where the masking layer is provided but the first metallic layer is not provided, the first photoactivatable layer is not activated. If the ratio of the degrees of transmission of the masking layer and the first metallic layer is chosen as described above, a structuring of the first photoactivatable layer with registering and structuring of the first metallic layer oriented in register with the masking layer is possible with sufficient exposure intensity and duration.
  • the first and the second metallic layer may be made of any metals or metal alloys, wherein the layer thickness of the first metallic layer is selected so that the above-mentioned conditions with respect to the transmittances of the layers are met.
  • the first metallic layer is preferably made of silver, preferably with a layer thickness of 20 to 40 nm.
  • the second metallic layer is preferably made of aluminum, copper or silver, preferably in a layer thickness of 10 to 50 nm. In this case, it is also possible the second metallic layer consists of two or more sublayers of different metals arranged one above the other. This can be used to adjust the transmittance of the second metallic layer so that the illuminance and / or exposure time to be used during the exposure is matched to the existing production machines.
  • the masking layer consists of a metal or a metal alloy, in particular of copper.
  • Metal layers are characterized by a particularly high opacity with a small layer thickness, so that the layer thickness of the masking layer and further the entire layer thickness of the film element can be reduced.
  • the masking layer consists of two or more layers, which preferably comprise a metal layer.
  • a black-colored photoresist layer used to pattern the masking layer to remain in the film body as part of the masking layer.
  • the object is further achieved according to the invention by a method for producing a film element with metallic layers registered to one another, in which a first metallic layer provided on a first surface of a flexible, single- or multilayer carrier film and a second surface of the second surface opposite on the first surface Carrier film provided masking layer are patterned by means of mutually synchronized Strukturweder processes to each other in which one or more further layers are applied to the first metallic layer after the structuring of the first metallic layer and the masking layer, in which one or more further layers a second metallic Layer is applied, in which on the second metallic layer, a first photoactivatable layer is applied and in which the first photoactivatable layer controlled by the masking layer with electromagnetic radiation for which the first photoactivatable layer is sensitive is exposed from the side of the film body opposite the masking layer, the masking layer, the first metallic layer, the one or more further layers, the second metallic layer and the first photoactivatable layer includes, and is structured.
  • the first and second metallic layers are registered to one another and thus arranged register-accurate with each other.
  • the exposure of the masking layer, the Carrier film, the first metallic layer, the film body comprising one or more further layers, the second metallic layer and the first photoactivatable layer accordingly does not proceed from the side of the masking layer but from the side of the film body opposite this side, so that the exposure device now is arranged on the masking layer opposite side of the film body.
  • the first photoactivatable layer now forms the layer of the film body closest to the exposure device. Even with this procedure, a register-accurate structuring of the first and the second metallic layer is made possible.
  • the masking layer is optically scanned here by means of one or more optical sensors and the exposure of the first photoactivatable layer is controlled in accordance with the values detected by the optical sensors.
  • a sensor array it is possible for a sensor array to optically scan the masking layer and to drive a laser which is arranged on the opposite side of the film body and, under the control of the values detected by the sensor array, simultaneously exposes the first photoactivatable layer to the scan.
  • the masking layer by means of a light source and to redirect the light reflected from the masking layer to the exposure of the first photoactivatable layer and thus to expose the first photoactivatable layer controlled by the masking layer.
  • the light irradiated onto and reflected by the masking layer is thus deflected around the film body, for example by means of a mirror arrangement, and used to expose the film body from the side of the film body lying opposite the masking layer.
  • Such an arrangement is characterized by a cost-effective design and a high achievable production speed.
  • two synchronized exposure processes are used in the inventive method as synchronized structuring processes.
  • the masking layer and the first metallic layer are preferably applied to the monolayer or multilayer film body, then a second photoactivatable layer is applied to the first metallic layer and a third photoactivatable layer is applied to the masking layer and then the second photoactivatable layer is exposed in a first exposure process
  • the first exposure mask and the third photoactivatable layer are exposed through a second exposure mask, wherein the first and the second exposure mask are precisely aligned with one another and thus the first and the second exposure processes are synchronized with one another.
  • the first metallic layer and the masking layer are removed by means of an etching process in the regions in which the second photoactivatable layer or third photoactivatable layer has been activated or not activated by the first or second exposure process.
  • the use of a positive or negative resist is possible, as explained above.
  • the first and the second exposure mask are formed plate-shaped and are irradiated with collimated light.
  • the two exposure masks are in this case preferably connected to one another by a holding frame, which ensures that the two exposure masks are fixed to one another during the exposure in the register.
  • the two exposure masks are against pressed the film body lying between the exposure masks, this fixed by the holding frame in fixed alignment with each other and then the film body from both sides, each exposed by the respective exposure mask.
  • drum exposure unit instead of a plate-type exposure mask for exposure and thus to expose, for example, the film body by means of two drum (mechanically) synchronized drum imagesetters.
  • Glass masks are preferably used as first and second exposure mask.
  • an electromagnetic radiation having a wavelength of less than 310 ⁇ m is furthermore preferably selected, since at this wavelength the plastic used for the carrier film (preferably PET) likewise has only a small patency and the carrier film thus also contributes to the decoupling of the first and second exposure process.
  • the masking layer is patterned in a laser ablation process by means of a laser and the first metallic layer is patterned in an exposure process by exposure through an exposure mask, the laser being synchronized with the position of the exposure mask. This can be dispensed with an etching process resulting in cost savings.
  • a film element which can be produced by means of the above-described method, with a flexible, single or multilayer carrier film, a first metallic layer which is provided on a first surface of the carrier film, one on one of the first surface a masking layer provided on the opposite second surface of the carrier film, a second metallic layer arranged on the side of the first surface and one or more further layers arranged between the first and the second metallic layer, in which the masking layer and the first metallic layer are patterned in register with one another and the second metallic layer corresponding to the masking layer is patterned in register with the first metallic layer.
  • the first and the second metallic layer at least partially overlap.
  • the invention thus succeeds in exposing the first photoactivatable layer in a subsequent process step by means of a masking layer in such a way that the first photoactivatable layer and thus the second metallic layer is patterned in register with the first metallic layer, although the first metallic layer at least partially overlaps is arranged to the transparent areas of the masking layer and thus hinders the structuring of the first photoactivatable layer.
  • the first and second metallic layers represent optically effective reflection layers.
  • the film element is preferably a security element for securing value documents, for example banknotes, credit cards or ID documents.
  • the one or more further layers are preferably formed by replication lacquer layers, spacer layers or decorative layers.
  • the first and second metallic layers are formed as electrode layers of an electrical component and thus the one or more further layers represent one or more electrical functional layers, In particular, layers of a semiconductor, an insulator or an electrically conductive material.
  • the first metallic layer and the second metallic layer are patterned according to a regular one or two dimensional raster, i. the first metallic layer and the second metallic layer each have first regions in which the metal is provided and second regions where the metal is not provided, which are arranged according to the first and the second raster, respectively.
  • the first and second raster may be, for example, a line raster or even a surface raster in which, for example, punctiform or quadrangular metallic regions are arranged in a two-dimensional, regular arrangement. These can also be geometrically transformed rasters, for example with circular or wavy raster lines.
  • the raster width of the raster is preferably more than 300 ⁇ m, preferably more than 600 ⁇ m.
  • the optical superimposition of the first and second metallic layer results in a visual overall impression for the human observer, which changes significantly even with the slightest change in the alignment of the two screens. Only when the two rasters are precisely aligned with one another do the desired visual impression arise, for example a pattern consisting of concentric circles.
  • the carrier film has a release layer, which enables the detachment of a film body comprising the first and the second metallic layer from the film element.
  • the film element may thus be designed, for example, as a transfer film, the film body comprising the masking layer and the carrier film being removed after the film element has been applied to a target substrate by the film body comprising the first and second metallic layers forming the transfer layer.
  • the carrier film it is also possible for the carrier film to have a release layer which makes it possible to detach a film body comprising the masking layer from the film element.
  • the carrier film after structuring the first photoactivatable layer, it is possible to detach the masking layer from the rest of the film body. As a result, the further processing of the film element is improved.
  • the film body 21 has a carrier film 10, a metallic layer 11 applied to a first side of the carrier film, one on the opposite lying metallic layer 13 and two photoactivatable layers 12 and 14, which in turn are applied to the metallic layer 11 and the metallic layer 13.
  • the carrier film 10 is a preferably transparent plastic film of a thickness between 8 microns and 125 microns.
  • the carrier film 10 preferably consists of PET or BOPP and is furthermore also stretched monoaxially or biaxially.
  • the carrier film 10 does not only consist of one layer but also of several layers.
  • the carrier film 10 it is possible, for example, for the carrier film 10 to have, in addition to a plastic carrier, for example a plastic film described above, a release layer which removes the layer structure consisting of the layers 11 and 12 from the carrier film 10 or removes it from the layers 13 and 14 formed layer structure of the carrier film 10 allows.
  • the metallic layers 11 and 13 are applied over the entire surface of the carrier film 10, for example by means of sputtering or vapor deposition.
  • the metallic layers 11 and 13 are made of, for example, aluminum, silver, copper, gold or an alloy of these materials.
  • a different metallic material is preferably used for the metallic layers 11 and 13, and these layers are also applied to the carrier film 10 in different layer thicknesses, as will be explained in detail below.
  • the metallic layer 13 is preferably made of copper and has a layer thickness of 100 to 200 nm, more preferably of about 200 nm.
  • the metallic layer 11 is preferably made of silver with a layer thickness between 20 and 40 nm, preferably about 30 nm.
  • the photoactivatable layers 12 and 14 are then applied over the entire surface of the metallic layer 11 or on the metallic layer 13, for example by printing, spraying or casting.
  • the photoactivatable material is a negative resist which is suitable for the exposure wavelength selected in the following exposure process.
  • a negative resist designed for UV light is used which is applied to the metallic layer 11 or 14 in a layer thickness of 100 to 2000 nm, preferably in approximately 800 nm.
  • a positive resist instead of a negative resist, ie to use a photoresist that loses its protective effect on exposure to the acid or alkali of the subsequent etching process, so that the exposed areas removed in the etching process become.
  • a negative resist having a layer thickness between 100 and 800 nm, preferably a layer thickness of 200 to 300 nm, which is suitable for exposure in the wavelength range of 248 nm (for example exposure with a CO 2) . Laser) is designed.
  • the film body 21 is structured by means of two exposure processes synchronized with one another, as described below with reference to FIGS Fig. 2 to Fig. 4 is explained.
  • Fig. 2 shows a film body 22 arranged between two masks 31 and 32, which corresponds to the film body 21 after exposure.
  • the film body 22 thus has the photoactivatable layers 12 and 14, the metallic layers 11 and 13 and the carrier film 10.
  • the mask 31 is composed of a plurality of areas 33 in which the light exposure mask 31 is opaque or substantially opaque, and a plurality of areas 34 in which the light exposure mask 31 is transparent is largely transparent.
  • the mask 32 also consists of a plurality of regions 36 in which the light exposure mask 32 is transparent or substantially transparent, and a plurality of regions 35 in which the light exposure mask 32 is opaque or largely is impermeable.
  • these are preferably two glass plates, for example quartz glass, which are provided with a correspondingly structured chromium mask, ie in the regions 33 and 35 the chromium layer is present and lies in the regions 34 and 36, respectively she does not pretend.
  • the film body 22 is now exposed from the side of the metallic layer 11 with the light 41 through the mask 31, so that exposed in the below the regions 34 of the mask 31 areas 121 of the photoactivatable layers, the photoactivatable layer 12 and thus activated is and in the lying below the areas 33 of the mask 31 areas 122 of the photoactivatable layers, these are not exposed and thus not activated.
  • the film body 22 is exposed from the side of the metallic layer 13 with the light 42, so that in the area lying below the areas 35 of the photoactivatable layer 14 14 it is not exposed and thus not activated and in the below the areas 36 of the mask 32 lying portion 141 of the photoactivatable layer 14, the photoactivatable layer 40 is exposed and thus activated.
  • the two exposure masks 31 and 32 are arranged in registration with respect to one another, so that the two photoactivatable layers 12 and 14 are patterned with register accuracy by the two exposure processes.
  • Fig. 3 shows an exposure device 5, which is supplied on the one hand of a film roll of the film body 21, which exposes the film body 21 and then the exposed film body 21, ie the film body 22, is removed and either wound on another film reel or directly to another manufacturing process, in particular an etching process, is supplied.
  • the exposure device 5 has two imagesetters 51 and 52, which are arranged on opposite sides of the film body 21 and positioned opposite one another.
  • the imagesetter 51 has the exposure mask 31, a plurality of light sources 53 and a collimator 54, which ensures that the light generated by the light sources 53 strikes the exposure mask 31 with a parallel beam path.
  • the imagesetter 52 has the exposure mask 32 and also a collimator 54 and a plurality of light sources 53.
  • the imagesetters 51 and 52 are preferably connected to one another by a holding frame and fixed relative to one another by the latter at least when the exposure process is carried out.
  • the exposure of the film body 21 by the exposure device 5 takes place in the stop-and-go mode.
  • the film body 21 is guided to the exposure device 5.
  • the imagesetters 51 and 52 are pressed against the film body 21, so that the masks 31 and 32 rest on the film body 21 and fix the film body.
  • the two-sided exposure takes place, wherein the luminosity and exposure time are matched to the photoactivatable layers 12 and 14.
  • the exposed part of the film body 21, ie the film body 22, is moved out of the exposure device 5 and the process starts again from the front.
  • Fig. 4 shows an exposure device with a first drum exposure unit 55 and a second drum exposure unit 56, in which the film body 21 is guided by means of guide rollers 57 through the exposure device.
  • the exposure masks 31 and 32 are arranged as endless masks on the lateral surface of the Trommelbelichters 55 and 56, respectively.
  • the exposure takes place here by means of light sources which are arranged in the interior of the drum exposure units 55 and 56 and which generate the light 41 or 42 and expose the film body guided over the lateral surfaces of the drum exposure units 55 and 56.
  • the drums of the Trommelbelichter 55 and 56 are in this case synchronized with each other and so connected to each other, for example via a transmission. This ensures that the first and the second exposure process are synchronized with one another and the photoactivatable layers 12 and 14 are patterned in register with each other.
  • the regions of the metallic layers 11 and 13 are removed in which the photoactivatable layer 12 or 14 is activated, ie decomposed (when using a positive resist ) or not activated, ie not cured (when using a negative resist).
  • the film body 22 is supplied to an etching bath, in which the metallic layer 11 and the metallic layer 13, which are arranged underneath the unexposed areas 122 of the photoactivatable layer 12 or underneath the unexposed areas 142 of the photoactivatable layer 14, are removed , After a washing and a drying process, one or more further layers are then applied to the now structured metallic layer 11 and then applied to the layer (s) then a further metallic layer and another photoactivatable layer over the entire surface.
  • Fig. 5 shows the resulting film body 23:
  • the film body 23 has the carrier film 10, on one side of the now structured metallic layer 13 and on the other side of the now structured metallic layer 11 is applied.
  • the metallic layer 13 now consists of areas 131 in which metal is present, and areas 132 in which the metal of the metallic layer 13 is absent.
  • the metallic layer 11 now also consists of areas in which the metal of the metallic layer 11 is present and areas 112 in which the metal is not present.
  • a layer 15 is applied, which is, for example, a transparent lacquer layer of a thickness in the range of 50 nm to 1000 nm.
  • further layers are applied to the metallic layer 11.
  • Such layers are, for example, replication lacquer layers into which diffractive structures are embossed, or else to colored layers.
  • the layer 15 or the further layers can be electrical functional layers.
  • the layer 15 is followed by a further metallic layer 16, which is preferably a thin copper layer with a layer thickness of 10 to 50 nm, preferably 30 nm.
  • the metallic layer 16 can also consist of another metal, for example of silver or aluminum, or consist of a sequence of several different metallic layers.
  • the metallic layer 16 is followed by the photoactivatable layer 17, which in the exemplary embodiment of FIG Fig. 5 one Negative photoresist, which is applied in a layer thickness between 100 and 800 nm, preferably of about 200 nm, and is designed for an exposure wavelength of about 365 nm.
  • the film body 23 is now exposed from the side of the metallic layer 13, as shown in FIG Fig. 6 is clarified.
  • the exposure device is in this case arranged on the side of the film body 23, on which the masking layer, the metallic layer 13 is arranged. Accordingly, the metallic layer 13 forms that layer of the film body 23 which represents the layer of the film body 23 closest to the exposure device. The exposure thus takes place through the metallic layer 13 and the layers of the film body arranged underneath.
  • Fig. 6 shows a film body 24, which corresponds to the film body 23 after performing the exposure step.
  • the film body 24 has the metallic layers 13, 11 and 16, the carrier film 10, the layer 15 and the photoactivatable layer 17.
  • the photoactivatable layer 17 is activated in areas 171 which are arranged congruent to the areas 132 of the metallic layer 13, and not activated in areas 172, which are arranged to match the areas 131 of the metallic layer 13, and so structured.
  • the ratio of the transmittances of the metallic layer 13 and the metallic layer 11 is in the wavelength range of the electromagnetic radiation used for the exposure greater than or equal to 1:10 to choose.
  • the material and the thickness of the metallic layers 11 and 13 will now be chosen to satisfy this condition.
  • compliance with the following condition has proved to be advantageous: the ratio of the transmittance of the metallic layer 11 to the transmittance of the metallic layer 13 at the wavelength of the
  • the ratio T 11 to T 13 must be greater than or equal to 15.
  • the illuminance and the illumination duration are then selected so that the photoactivatable layer 17 in the regions in which the regions 132 and 111, is still activated and not yet activated in the areas where the areas 131 and 112 overlap. This can be determined by appropriate measurement series in a simple manner.
  • the film body 25 is then subjected to a development and etching process by removing the metallic layer 16 in the regions 172 in which the photoactivatable layer 17 has not been activated, and in the regions 171 in which the photoactivatable layer 17 has been activated, this remains protected by the photoresist and so remains on the layer 15.
  • Fig. 7 shown film element 25, which comprises the structured metallic layers 13, 11 and 16, the carrier film 10 and the layer 15.
  • the metallic layer 16 has congruent to the areas 131 areas 162, in which the metal of the metallic layer 16 is not provided and congruent to the areas 132 areas 161, in which the metal of the metallic layer 16 is provided.
  • the metallic layer 16 is structured in accordance with the metallic layer 13 and thus in register with the metallic layer 11.
  • the regions 161 and 111 of the metallic layers 16 and 11 are aligned in register with one another, despite the multiplicity of process steps that have been performed between the structuring of the metallic layer 11 and the metallic layer 16.
  • Fig. 8 shows a film body 6, which can be used as optical security element.
  • the film body 6 has a carrier film 60 which consists of a plastic film 62, a release layer 63 and a replication lacquer layer 64.
  • the plastic film 62 is preferably a plastic carrier made of PET or BOPP with a layer thickness of between 8 ⁇ m and 125 ⁇ m.
  • the replication layer 64 is a replicate varnish into which a surface relief can be shaped by means of a heated stamping die or by means of UV replication.
  • the replication layer 64 is one thermoplastic paint.
  • the release layer 63 is a layer containing, for example, wax components, which makes it possible to detach the layer 62 from the layered body following the layer 64.
  • the film body 6 further comprises metallic layers 61 and 67, a further replication layer 66 and a protective lacquer layer 68.
  • the film body 6 is, as previously with reference to the figures Fig. 1 to Fig. 6 explained by means of exposure through the metallic layer 61 serving as a masking layer.
  • the carrier film 60 is used and in this case in a the Fig. 2 described exposure process preceding manufacturing step:
  • the release film 63 and then the replication layer 64 are applied over the entire surface of the plastic film 62.
  • an optically active surface relief for example a diffraction grating or a hologram
  • the metallic layers 61 and 65 are applied and patterned in registration with each other.
  • the replication layer 66 is then applied and an optically active surface relief, for example a diffraction grating or a hologram, is likewise molded into this layer.
  • the metallic layer 67 is applied to the replication lacquer layer 66 and structured by means of exposure through the metallic layer 61.
  • the protective lacquer layer 68 is applied.
  • the refractive index of the protective lacquer layer 68 and of the two replication layers 64 and 66 is selected so that the refractive index of these layers is identical or only slightly different, so that in the areas where a metallic layer is not applied to the surface structures Effect of Surface structure is extinguished. Furthermore, it is also possible to dispense with the use of the replication lacquer layers 54 and 66 and the impression of optically effective surface reliefs in these layers (instead of the replication layer 66, a transparent lacquer layer is then provided, for example).
  • the metallic layer 65 and the metallic layer 61 become in this case in a process step Fig. 6 structured so that with respect to the metallic layers 67 and 65, the in Fig. 8 indicated, regular arrangement to one another: In the first region 651, the metallic layer 65 is provided and in the second region 652, the metallic layer 65 is not provided.
  • the regions 652 and 651 are arranged according to a regular geometrically transformed line grid so that the regions 651 equidistant from each other.
  • the metal layer 67 consists of regions 671 in which the metallic layer is provided, and regions 672 in which the metallic layer is not provided, the regions 671 and 672 also being aligned according to a regular line grid.
  • the grid spacings of the two line grids coincide and the width of the metallic areas 671 and 651 and the alignment of the grids to one another are selected such that the areas 671 are arranged in the area of the areas 652 and the areas 651 in the area of the areas 672.
  • the width of the regions 651 and 671 and the alignment of the two rasters to one another are preferably selected such that -as in FIG Fig.
  • a small gap is located and thus the body formed by the layers 63 to 68 is transparent in this area.
  • identical rasters are used, which are offset by about 180 °, ie by about 1 ⁇ 2 pitch, to each other and the width of the metallic regions 651 and 671 is selected so that they are smaller than the 1 ⁇ 2 grid, preferably about 1 ⁇ 4 of the grid is.
  • Fig. 11 shows optical appearances 94, 95 and 96 of a further structuring of the metallic layers 67 and 65, wherein here in contrast to the embodiment of Fig. 10 no circular geometrically transformed line grid but based on a geometric figure transformed line grid of the structuring of the metallic layers 65 and 67 has been used.
  • the visual appearance 94 shows the appearance in registration of the layers, and the visual appearances 95 and 96 show the appearance of slight vertical displacement of the patterning of the metallic layers 65 and 67 to each other.
  • the film body 6 after Fig. 8 may be further provided with one or more further layers, for example with an adhesive layer.
  • the release layer 63 enables the detachment of the plastic film 62 with the metallic layer 61 from the remainder of the film body, so that the film body with the layers 64 to 68 can be transferred as a security element, for example by hot stamping onto a document to be secured.
  • the invention is thus also directed to such a film body serving as a security element, which has two metallic layers, namely the layers 65 and 67, between which at least one transparent further layer, namely the layer 66, is provided, wherein the two metallic layers are formed according to the further features of claims 32 to 34.
  • Fig. 9 shows a film body 7, which can also be used as a security element, for example, for securing banknotes, documents of value or ID documents.
  • the film body 7 has a carrier film 70 with a replication layer 75, a protective lacquer layer 74, a release layer 73 and a plastic film 72, metallic layers 71, 76 and 78, a replication layer 77 and an adhesive layer 79.
  • the film body 7 is after as in relation to the film body 6 after Fig. 8
  • a first diffraction-optical relief structure 82 and in the surface of the replication layer 77 a second diffraction-optical relief structure 81 is formed, as also shown in FIG Fig. 9 is shown.
  • the metallic layer 78 is structured by means of exposure through the metallic layer 71 serving as the masking layer, so that the metallic layer is provided in regions 781 and the metallic layer is not provided in regions 782, congruent to the metallic regions 711 of the metallic layer 71 ,
  • the patterning of the metallic layers 76 and 78 differs from the patterning of the metallic layers 65 and 67 after Fig. 8
  • the metallic layers 76 and 78 are provided substantially congruent to each other so that the areas 761 and 781 in which the metal of the respective metallic layer is provided and the areas 762 and 782 in which the metal of the respective metallic layer is not provided , lie substantially congruent superimposed.
  • Different diffraction-optical structures for example different holograms, are now selected for the diffraction-optical relief structures 81 and 82.
  • the optical impression generated by the diffraction-optical relief structure 81 for example a first hologram
  • the optical impression generated by the diffraction-optical relief structure 82 for example a second hologram, as well as the feature provided by the transparent regions 782 and 762, can be seen.

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Claims (15)

  1. Procédé de fabrication d'un élément en feuille (25) comportant des couches métalliques (11, 16) disposées les unes par apport aux autres, une première couche métallique (11) prévue sur une première surface d'une feuille substrat (10) flexible à une ou plusieurs couches et une couche de masquage (13) prévue sur la deuxième surface de la feuille substrat (10) opposée à la première surface étant structurées de façon à s'adapter exactement les unes aux autres au moyen de processus texturant synchronisés les uns par rapport aux autres, dans lequel, après la structuration de la première couche métallique (11) et de la couche de masquage (13), une ou plusieurs autres couches sont appliquées sur la première couche métallique (11), une deuxième couche métallique (16) étant appliquée sur l'une ou les plusieurs autres couches, une première couche photo-activable (17) étant appliquée sur la deuxième couche métallique et la première couche photo-activable (17) étant structurée par exposition au travers de la couche de masquage (13), la première couche métallique, l'une ou les plusieurs autres couches (15) et la deuxième couche métallique (16) des côtés de la couche de masquage (13) étant structurées par rayonnement électromagnétique d'une longueur d'ondes à laquelle la première couche photo-activable (17) est sensible, l'épaisseur et le matériau de la couche de masquage (13) et de la première couche métallique (11) étant choisis de telle sorte que le rapport du degré de transmission de la couche de masquage (13) et de la première couche métallique (11) à la longueur d'ondes du rayonnement électromagnétique utilisée pour l'exposition étant supérieur à 1:10.
  2. Procédé selon la revendication 1, caractérisé en ce que le rapport du degré de transmission de la couche de masquage (13) au degré de transmission de la première couche métallique (11) à la longueur d'ondes du rayonnement électromagnétique utilisé pour l'exposition est supérieur ou égal à 1:15, de préférence entre 1:15 et 1:20 et/ou en ce que le degré de transmission de la couche de masquage (13) à la longueur d'ondes du rayonnement électromagnétique utilisé pour l'exposition est inférieur à 6 %.
  3. Procédé de production d'un élément en feuille comportant des couches métalliques disposées les unes par apport aux autres, une première couche métallique prévue sur une première surface d'une feuille substrat flexible à une ou plusieurs couches et une couche de masquage prévue sur la deuxième surface de la feuille substrat opposée à la première surface étant structurées de façon à s'adapter exactement les unes aux autres au moyen de processus texturants synchronisés les uns par rapport aux autres, dans lequel, après la structuration de la première couche métallique et de la couche de masquage, une ou plusieurs autres couches sont appliquées sur la première couche métallique, une deuxième couche métallique étant appliquée sur l'une ou les plusieurs autres couches, une première couche photo-activable étant appliquée sur la deuxième couche métallique et la première couche photo-activable commandée par la couche de masquage avec un rayonnement électromagnétique auquel la couche photoactivable est sensible, étant exposée du côté du corps de feuille opposé à la couche de masquage, qui comprend la couche de masquage, la première couche métallique, l'une ou les plusieurs autres couches, la deuxième couche métallique et la première couche photo-activale, et étant ainsi structurée.
  4. Procédé selon la revendication 3, caractérisé en ce que la couche de masquage est détectée optiquement par un ou plusieurs capteurs optiques et l'exposition de la première couche photo-activable est commandée de façon correspondant aux valeurs acquises par les détecteurs optiques ou en ce que la couche de masquage est exposée au moyen d'une source de lumière et la lumière réfléchie par la couche de masquage est détournée pour l'exposition de la première couche photo-activable, la première couche photo-activable commandée par la couche de masquage étant ainsi exposée ou en ce que la couche de masquage est séparée de la feuille substrat pour la structuration de la première couche photo-activable, est placée entre une source de lumière et la première couche photo-activable et la première couche photo-activable est exposée par exposition au travers de la couche de masquage, la première couche photo-activable commandée par la couche de masquage étant ainsi exposée.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la deuxième couche métallique (16) est retirée partiellement dans les zones dans lesquelles la première couche photo-activable (17) est activée par exposition ou dans les zones dans lesquelles la première couche photo-activable n'est pas activée par exposition, par un processus de corrosion de sorte que la deuxième couche métallique (16) soit structurée conformément à la couche de masquage (13) de façon à s'adapter exactement à la première couche métallique (11).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'on utilise comme processus texturants synchronisés, deux processus d'exposition synchronisés l'un par rapport à l'autre.
  7. Procédé selon la revendication 6, caractérisé en ce que la couche de masquage (13) et la première couche métallique (11) sont appliquées sur l'un ou plusieurs corps de feuille (10), en ce qu'ensuite, une deuxième couche photo-activable (12) est appliquée sur la première couche métallique (11) et une troisième couche photo-activable (14) est appliquée sur la couche de masquage (13), en ce que la deuxième couche photo-activable (12) est exposée dans un premier processus d'exposition au travers d'un premier masque d'exposition (31) et la troisième couche photo-activable (14) est exposée dans un deuxième processus d'exposition au travers d'un deuxième masque d'exposition (32), le premier et le deuxième masque d'exposition (31, 32) étant orientés de façon à s'adapter exactement l'un par rapport à l'autre et ainsi, le premier et le deuxième processus d'exposition sont synchronisés l'un par rapport à l'autre, et en ce que la première couche métallique (11) et la couche de masquage (13) sont retirées au moyen d'un processus de corrosion dans les zones (112', 132) dans lesquelles la deuxième couche photo-activable (12) ou la troisième couche photo-activable (14) sont activées par le premier ou le deuxième processus ou le processus d'exposition ou ne sont pas activées.
  8. Procédé selon la revendication 7, caractérisé en ce que les première et deuxième masques d'exposition (31, 32) sont disposés sur les côtés opposés l'un à l'autre du corps de feuille comprenant la deuxième et la troisième couche photo-activable (12, 14), la couche métallique (11), la couche de masque (13) et la feuille substrat (10) et la deuxième et la troisième couche photo-activable étant exposées de façon concomitante.
  9. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'on utilise comme processus texturants synchronisés, un processus d'exposition et un processus d'ablation laser qui sont synchronisés l'un par rapport à l'autre.
  10. Procédé selon la revendication 9, caractérisé en ce que la couche de masquage (13) est structurée dans un processus d'ablation au laser au moyen d'un laser et la première couche métallique est structurée dans un processus d'exposition par exposition au travers d'un masque d'exposition, le laser étant synchronisé avec la position du masque d'exposition.
  11. Elément en feuille (25), pouvant être produit en particulier selon la revendication 1 ou la revendication 3, comportant une feuille substrat (10) flexible à une ou plusieurs couches et une première couche métallique (11) qui est prévue sur une première surface de la feuille substrat, caractérisé en ce que l'élément en feuille (25) présente en outre une couche de masquage (13) prévue sur une deuxième surface opposée à la première surface, une deuxième couche métallique (16) disposée du côté de la première surface et une ou plusieurs autres couches (15) qui sont disposées entre la première et la deuxième couche métallique, la couche de masquage (13) et la première couche métallique (11) étant structurées de façon à s'adapter exactement et la deuxième couche métallique (16) étant structurée conformément à la couche de masquage (13) de façon à s'adapter exactement à la première couche métallique (11), de préférence, la première et la deuxième couche métallique se chevauchant au moins en partie.
  12. Elément en feuille selon la revendication 11, caractérisé en ce que l'épaisseur et le matériau de la couche de masquage (13) et de la première couche métallique (11) sont choisis de telle sorte que le rapport du degré de transmission de la première couche métallique (11) et de la couche de masquage (13) à une longueur d'ondes d'un rayonnement électromagnétique utilisable pour l'exposition est supérieur à 1:10.
  13. Elément en feuille selon l'une des revendications 11 à 12, caractérisé en ce que la feuille substrat présente une couche de décollement qui permet le décollement d'un corps de feuille comprenant la première et la deuxième feuille métallique de l'élément en feuille.
  14. Elément en feuille selon l'une des revendications 11 à 13, caractérisé en ce que la feuille substrat présente une couche de décollement qui permet le décollement d'un corps de feuille comprenant la couche de masquage de l'élément en feuille.
  15. Elément en feuille selon l'une des revendications 11 à 14, caractérisé en ce que la première couche métallique (65) et la deuxième couche métallique (67) sont constituées respectivement de premières zones (651, 671) dans lesquelles le métal de la couche métallique est prévu et de deuxièmes zones (672, 652) dans lesquelles le métal de la couche métallique n'est pas prévu, en ce que les première et deuxième zones de la première couche métallique (65) sont disposées selon une première trame régulière unidimensionnelle ou bidimensionnelle et les première et deuxième zones de la deuxième couche métallique (67) sont disposées selon une deuxième trame régulière unidimensionnelle ou bidimensionnelle, la première et la deuxième trame étant disposées de façon à s'adapter exactement l'une à l'autre.
EP09716332A 2008-03-06 2009-02-28 Procédé de fabrication d'un élément en feuille Active EP2262648B1 (fr)

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DE102008013073A DE102008013073B4 (de) 2008-03-06 2008-03-06 Verfahren zur Herstellung eines Folienelements und Folienelement
PCT/EP2009/001452 WO2009109343A2 (fr) 2008-03-06 2009-02-28 Procédé de fabrication d'un élément en feuille

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EP2262648B1 true EP2262648B1 (fr) 2011-08-31

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JP (1) JP5377523B2 (fr)
KR (1) KR101555727B1 (fr)
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AT (1) ATE522367T1 (fr)
AU (1) AU2009221215B2 (fr)
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CA2717775A1 (fr) 2009-09-11
AU2009221215A1 (en) 2009-09-11
AU2009221215B2 (en) 2014-02-13
US10179472B2 (en) 2019-01-15
US20110003166A1 (en) 2011-01-06
CN101959697A (zh) 2011-01-26
JP2011520638A (ja) 2011-07-21
US9463659B2 (en) 2016-10-11
CN101959697B (zh) 2014-07-30
JP5377523B2 (ja) 2013-12-25
US8720951B2 (en) 2014-05-13
KR101555727B1 (ko) 2015-10-05
WO2009109343A2 (fr) 2009-09-11
ATE522367T1 (de) 2011-09-15
TW201002538A (en) 2010-01-16
TWI474935B (zh) 2015-03-01
KR20100131472A (ko) 2010-12-15
US20160375714A1 (en) 2016-12-29
DE102008013073A1 (de) 2009-09-10
WO2009109343A3 (fr) 2009-11-19
US20140205852A1 (en) 2014-07-24
CA2717775C (fr) 2015-12-22
DE102008013073B4 (de) 2011-02-03

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